Motor support



Dec; 0, 1924- 1,520,949

M. HEMLEB MOTOR SUPPORT Fil y 24, 1920 W|TNE SE5: I INYENTOR $74 156% Mark/z Maw/ab Patented Dec. 30, 1924.

UNITED STATES PATENT OFFICE.

'MARTIN HEMLEB, F ELIZABETH, NEW JERSEY, ASSIGNOR, BY MESNE ASSIGNMENTS,

TO THE SINGER MANUFACTURING COM CORPORATION or NEW JERSEY.

PANY, OF ELIZABETHPORT, NEW JERSEY, A

MOTOR SUPPORT.

Application filed May 24,

To all whom it may concern."

Be it known that I, MARTIN HEMLEB, a citizen of the United States, residin at Elizabeth, in the county of Union and btate of New Jersey, have invented new and useful Improvements in Motor Supports, of which the following is a specification.

This invention relates to motor supports.

It is particularly applicable for rigidly supporting a belt drive motor on a sewing machine standard but is not limited thereto.

It is particularly desirable in providing a support for a belt driven motor to employ a bracket having a means for adjustably supporting the motor thereon to permit the same to be applied as a compact unit to various types of machines in which the motor is mounted at different distances from the standard. The different distances may be necessitated by the character of the machine cover, the configuration of the standard, or to the style of machine, as for example the drop head type, to which the unit is applied. The present invention aims r to provide a suitable mounting to meet the above conditions, without requiring substantial change between driving centers, so a belt of uniform length may be employed.

One of the objects of this invention is to provide a rigid support for a motor which may be applied to the standard of different types of machines.

Another object is to provide a rigid support for a belt driven motor, which may be applied as a compact unit to different types of machines to permit a belt of uniform length to be employed.

Another object is to provide a rigid support for a motor having means to permit the distance between the motor and standard to bevariedand still use one belt.

Another object is to provide a rigid support and means topermit a motor to be adjusted thereon in a path approximating the arc of a circle, without appreciably'altering the distance between driving centers.

Another object is to provide a bracket for a belt driven motor having means associated therewith to permit the motor to be adjusted on the bracket when first applied to a machine without substantially varying the distance between driving centers when a materialchange is madein the distance 1920. Serial No. 383,708.

between the sewing machine and the motor.

Another object is to provide a bracket having ameans for rigidly and adjustably supporting a belt driven motor, so that the bracket, motor and a belt of uniform length may be applied as a. standard unit to different types of machines necessitating a change in distance between the standard and motor.

Other objects and advantages will hereinafter appear.

One embodiment of the invention is illustrated in the accompanying drawing.

In the drawings:

Fig. 1 is an end elevation, with the flywheel broken away, showing a sewing machine standard with the motor supported thereon.

Fig. 2 is a bottom plan of the motor and bracket.

Fig. 3 is a broken section on line 33 of Fig. 1 showing the means for mounting the motor on the bracket.

Fig. 4 is a perspective of the bracket.

A sewing machine standard 1 is provided with the usual driven member or pulley 2 and the fly-wheel 3. A knurled lock unit 4 is arranged in the usual manner to disengage the fly-wheel and pulley from the sewing machine mechanism when desired.

A bracket 5 is provided having at one end a vertical arm 6 with a groove 7 therein, which groove is seated on a raised bearing 8 extending vertically on the standard 1. The bracket is rigidly held in position on the standard by a. threaded stud 9 passing through an aperture 10 in the vertical arm, andinto a threaded aperture in the standard 1. Only' one stud is required as the cooperating groove 7 and raised bearing 8 prevents turning of the bracket 5 about its point of support. Any other suitable means may be provided for rigidly mounting the bracket on the standard.

The bracket 5 is provided With an inclined arm 11 at one end, on which a motor 12 is rigidly mounted. A means is provided for adjusting the motor longitudinally of the arm. The arm 11 is provided with a groove 13 which is seated on a raised hearing 14 of the motor. A plurality of spaced apertures 15 extend through the arm 11 and a plurality of threaded apertures 16 are formed in the raised bearing 14: of the motor but are differently spaced than apertures 15 in the arm 11. The guideway 13 stands substantially at right angles to line ab through the center of the pulley 2. To fix the motor in one position, one of each of the apertures 15, 16 are brought in alinement and a stud 17 or the like is passed therethrough, and threaded in the motor 12. The broken section of Figure 3 shows more clearly the means of securing the motor 12 on" the inclined arm 11.

An idler pulley 18 is mounted at the end of an arm 19 pivo-tally carried upon the motor 12. The idler 18 is yieldingly pressed by a spring 20 on a belt 21 guided over a driving pulley 22 of the motor and the driven pulley 2. One end of the spring 20 is fixed. The spring is shown coiled about a stud 23, on which the arm 19 is mounted, and the other end of the spring is bent about the arm 19 so that the action of the.

spring will be exerted thereon. It is to be understood that any other suitable means may be employed for yieldingly pressing the idler 18 on the belt 21.

One position of the motor 12 on the arm 11 is shown in full lines in Figure 1. This represents the position of the motor, bracket and belt when applied as a unit, to a certain type of sewing machine. In this position there is a certain distance between the centers of the driving pulley 22 and the driven member 2.

In applying the motor, bracket and belt as a standard unit to another type of sewing machine, conditions may be such as to require a different distance between the axis of the pulley 22 and the vertical axis of the standard 1. That is, if the standard 1 of another type of machine is thicker than that shown, it will be necessary to space the motor at a greater distance from the vertical axis of such thicker standard in order to clear thewall thereof.

In such case the motor 12 may be moved to another position. on the arm 11 as indicated by the dotted outline in Figure 1. This adjustment in position may be effected by moving the motor 12 upon the arm 11 until two of the apertures are in alinement, when the threaded stud may be again inserted. By having the two apertures on the motor 12 and inclined arm ll suitably spaced itmay be possible to obtain any desired adjustment of the motor. Any other means may be employed for adjusting the motor position.

In each of the different positions the distance between the motor and standard may be substantially or appreciably changed, without substantially altering the distance between the driving centers. One belt or a belt of uniform length may thus be employed for either position of the motor on the bracket. The end of the bracket supporting the motor may be formed as the arc of a circle.

The feature permitting the adjustment of the motor is of importance, because it enables the bracket, motor and belt of uniform length to be applied as a standard unit to various machines in which the distance between the motor and standard may vary considerable.

The invention contained herein is, of course, susceptible of other embodiments and adaptations.

What is claimed is:

1. A motor attachment for belt driven sewing machines comprising a bracket adapted for attachment to the frame standard of a sewing machine, and a motor rigidly mounted on said bracket and having a power-shaft and belt-pulley, there being provision for adjustment of the motor on the bracket in an inclined direction substantially normal to the center line connecting the axes of the motor and machine shafts, whereby a given motor attachment may be applied to sewing machines of various types while maintaining a uniform length of belt-drive.

2. The combination of a standard, a driven-member rotatably mounted thereon, a bracket rigidly mounted on the standard, a. motor having a driving pulley, adjustably mounted on the bracket, fiexibledriving means between the driving and driven members, and an idler yieldingly riding on the flexible driving means.

3. A motor supporting bracket adapted to be fastened rigidly to a sewing machine standard, comprising a vertical arm having a groove therein for engaging a tongue on the standard, an inclined arm having a groove therein for engaging a tongue on the motor, and a horizontal body member connecting the vertical and inclined arms, each arm having an aperture therein for receiving a clamping member for rigidly fastening the respective arms to the standard and motor.

4. The combination of a motor supporting bracket adapted to be mounted rigidly on a sewing machine standard in which a. driven member is rotatably mounted, said bracket having an inclined arm, and a motor adjustably mounted on the inclined arm, the inclined arm being so constructed and having such an inclination as to maintain a driving connection between the motor and the driven member for the different motor positions.

5. The combination of a sewing machine standard, a driven member rotatably mounted thereon a bracket rigidly mounted on the standard. said bracket having an inclined arm at one end, a motor having a driving pulley, rigidly mounted on the inclined arm, a driving belt connecting the driving pulley and drlven member,'an idler yieldingly mounted, for the belt, and means for adjusting the motor longitudinally of the inclined bracket arm to vary the distance between the centers of the driving pulley and driven member so that a belt of constant length may be employed when the motor is in any one of the adjusted positions on the arm.

6. The combination of a bracket having an inclined arm, a motor having a driving pulley rigidly mounted on the arm, a belt for the pulley, an idler for the belt, and means for mounting the motor at a pluralityof points on the arm, the said bracket being adapted to be rigidly mounted on any one of a number of standards having a driven member rotatably mounted thereon, whereby a driving connection may be estab lished between the driving pulley and the driven member Without altering the belt length.

7. The combination of a bracket adapted to be supported on a sewing machine standard upon which a driven pulley is mounted, the said bracket havin an inclined arm, a motor mounted on the Inclined arm, a driving pulley for the motor a belt adapted to connect the driving and driven pulley, an idler arm pivotally supported on the motor, an idler pulley rotatably supported on the idler arm and adapted to ride upon the belt, yielding means cooperating with the idler arm adapted to press the idler pulley on the belt, and means for ad'usting the motor on the inclined arm where y the bracket, motor and belt may be applied as a unit to various types of sewin machine standards to effecta driving relation with a belt of one length under the various conditions involving a change in distance between driving centers.

8. In combination with a-sewing machine standard having a driven member rotatably mounted thereon, a motor supporting bracket having a vertical arm at one end to be fastened rigidly to the standard and an inclined arm at the other end, a motor rigidly fastened to the inclined arm, and means.

for adjusting the motor longitudinally along the arm, the inclination of the arm being such that the motor is maintained in driving relation to the driven member for the different motor positions.

9. The combination of a sewing machine standard having a driven member rotatably mounted thereon, a bracket having at one end a vertical arm and at the other an inarm whereby the motor may be mounted thereon in any one of a plurality of positions so as to maintain a driving connection between the motor and driven member for th different motor positions.

10. A support for mounting on a sewing machine standard a motor having a belt driving connection to' a driven member supportedby the standard, comprising a bracket having means at one end thereof for rigidly fastening the same to the standard, an inclined arm at the other end of the bracket, and means for rigidly mounting the motor on the inclined arm in any one of a plurality of positions, the inclination of the arm being such that a belt of uniform length may be employed to connect the motor and the driven member for the different motor positions.

11. The combination of a motor supporting bracket havin at one end means for rigidly fastening t e same to a sewing machine standard so the bracket will project horizontally therefrom, an inclined arm at the other end of the bracket, a motor, a

tongue and groove connection between the motor and the inclined arm whereby the motor may be adjusted on the inclined arm to vary the horizontaland vertical position of the motor with respect to the standard,

scribed myname.

MARTIN HEMLEB. 

